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Rephrase @ operator description

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Adam Szkoda 2014-05-25 10:54:54 +02:00 committed by Eelco Dolstra
parent d8c061e044
commit 8ea9fd7aa6
1 changed files with 3 additions and 4 deletions
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7
doc/manual/writing-nix-expressions.xml
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@ -1060,15 +1060,14 @@ map (concat "foo") [ "bar" "bla" "abc" ]</programlisting>
and <varname>z</varname>.</para></listitem> and <varname>z</varname>.</para></listitem>
<listitem><para>An <literal>@</literal>-pattern requires that the <listitem><para>An <literal>@</literal>-pattern provides a means of referring
argument matches with the patterns on the left- and right-hand side to the whole value being matched:
of the <literal>@</literal>-sign. For example:
<programlisting> <programlisting>
args@{ x, y, z, ... }: z + y + x + args.a</programlisting> args@{ x, y, z, ... }: z + y + x + args.a</programlisting>
Here <varname>args</varname> is bound to the entire argument, which Here <varname>args</varname> is bound to the entire argument, which
is further matches against the pattern <literal>{ x, y, z, is further matched against the pattern <literal>{ x, y, z,
... }</literal>.</para></listitem> ... }</literal>.</para></listitem>